.nav {
    display: flex;
    flex-wrap: wrap;
    width: 100%;
    padding-top: 20.5px;
  }
  
  .nav-item {
    /* 100% / 4 */
    width: 25%;
    margin-bottom: 20.5px;
  }
  
  .nav-link {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: #999;
    font-size: 12px;
  }
  
  .nav-img {
    /* 44px / 375/4=93.75px*/
    width: 46.933333%;
    margin-bottom: 5.5px;
  }
  